C11112331312111112111133133313331333132323133313331333131123311212311111   >>    C1111233131211111211113313331333133313232313331333133313112331121231111   <<    C11112331312111112111133133313331333132323133313331333131123311212311113   >>      C11112331312111112111133133313331333132323133313331333131123311212311112   >>